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. 2010 Dec 15;105(2):896–909. doi: 10.1152/jn.00313.2010

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Fig. 3. — HPNI activity during monocular optokinetic reflex OKR behaviors. A–D: FR of an ipsilateral (left-side) neuron during spontaneous scanning (A) and differences in LE/RE OKR amplitude (B), phase (C), and frequency (D). Red arrows show regions of monocularity. A: FR sensitivity was found to be conjugate for the LE 1.06 (spike/s)/° and 0.21 (spike/s) per °/s, (r = 0.77) and RE 1.33 (spike/s)/° and −0.31 (spike/s) per °/s, (r = 0.74). B: PL (monocular planetarium) amplitude differences (LPl, 15.7°/s and RPl, 0°/s) produced monocular LE and RE velocity gains of 0.31 and 0.05 with similar phase leads of 7° and 14°. FR sensitivity was LE 1.13 (spike/s)/° and 1.02 (spike/s) per °/s, (r = 0.92) and for the RE 1.57 (spike/s)/° and 1.40 (spike/s) per °/s, (r = 0.72). C: LPl and RPl were of similar amplitude (15.7°/s) but 180° out-of-phase. Gains were similar (0.16) but with a phase lag of 166.2° resulting in oppositely directed velocity sensitivity. LE sensitivity was 1.28 (spike/s)/° and 0.40 (spike/s) per °/s, (r = 0.92) and RE 1.47 (spike/s)/° and −2.18 (spike/s) per °/s, (r = 0.75). D: LPl and RPl were of similar amplitude (15.7°/s), but at different frequency (0.4 and 0.18 Hz). LE and RE gains were similar (0.20 and 0.23) with a FR correlations of LE 1.32 (spike/s)/° and 1.42 (spike/s) per °/s, (r = 0.88) and RE 1.46 spike/s/° and 0.66 (spike/s) per °/s, (r = 0.66).